<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.wrap{
				float: left;
				width: 500px;
				height: 300px;
				border: 1px solid;
			}
			.box{
				position: relative;
				left:50%;
				top:50%;
				margin: -50px 0 0 -50px;
				width: 100px;
				height:100px;
				background:red;
				transition:0.5s;
			}
			.wrap:nth-child(1):hover .box{
				transform: skew(30deg,20deg);
			}
			.wrap:nth-child(2):hover .box{
				transform: skew(30deg);
			}
			.wrap:nth-child(3):hover .box{
				transform: skewX(30deg);
			}
			.wrap:nth-child(4):hover .box{
				transform: skewY(20deg);
			}
		</style>
	</head>
	<body>
		<div class="wrap">
		<div class="box box1">	</div>
		</div>
		<div class="wrap">
			<div class="box box2"></div>
		</div>
		<div class="wrap">
			<div class="box box3"></div>
		</div>
		<div class="wrap">
			<div class="box box4"></div>
		</div>
	</body>
</html>